How do minerals form in caves?

Caves are full of amazing stuff: bats, hidden passageways and of course – spectacular rock formations! So where do these rock structures come from? We asked geologist Hazel Barton to help us find the answer. Got a rock-solid question?Send it to us at BrainsOn.org/contact, and we’ll help find the answer under the surface. See omnystudio.com/listener for privacy information.